[医] 隐性病毒,潜伏性病毒;
These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.
这些猪在自然条件下已受到含有隐蔽流感病毒的肺丝虫寄生.
As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.
通常,受到携带了“隐蔽病毒”的肺丝虫侵袭的猪,并不因肺丝虫的侵袭立即发生流感。
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